Analog Devices, Inc. (ADI), a global leader in high-performance semiconductors for signal processing applications, has now developed ADMP801 which is a high performance MEMS microphone developed specifically for hearing aid applications.

When compared to legacy solutions like electric condenser microphones (ECMs), the ADMP801 is not only smaller in size at only 7.3 cubic millimeters, but also offers greater performance stability over time, temperature, and environmental changes, produces very low equivalent input noise (EIN) at 27 dBA sound pressure level, and consumes a fraction of the power consumed by traditional ECMs.

The ADMP801 MEMS microphone is available in a tiny surface-mount package measuring only 3.35 mm x 2.50 mm x 0.98 mm that is reflow-solder-compatible with no sensitivity degradation.

“Hearing aids represent an application ideally suited for the advantages MEMS microphones offer including small size, stability, and very low power consumption,” said Pat O’Doherty, vice president,  Healthcare Group, Analog Devices.

“However, MEMS microphones have not offered the EIN performance levels that meet stringent hearing aid standards until now. The ADMP801 MEMS microphone offers noise performance, package size, and phase and gain stability that is very desirable for advanced hearing aids that incorporate beam forming to facilitate sound or voice localization,” stated the healthcare VP.

The omni-directional MEMS microphone is designed specifically for hearing aid applications. It is fully pick-and-place and reflow compatible, offering an option to save on cost using a mechanized assembly process as compared to ECMs that require manual assembly processes. The device offers excellent environmental and temporal stability, and multiple ADMP801 MEMS microphones can be configured in an array to form a directional response, facilitating sound of voice localization.

Analog Devices is one of the highest growth companies within the technology sector. It is acknowledged as the world leader in data conversion and signal conditioning technology. The company serves over 60,000 customers, representing virtually all types of electronic equipment. It is head quartered in Norwood, Massachusetts, with design and manufacturing facilities located globally.